touch-id

问题 I save the password to keychain with Touch ID flags: + (void)setPasscode:(NSString *)passcode { CFErrorRef error = NULL; SecAccessControlRef sacObject; sacObject = SecAccessControlCreateWithFlags(kCFAllocatorDefault, kSecAttrAccessibleWhenPasscodeSetThisDeviceOnly, kSecAccessControlUserPresence, &error); if(sacObject == NULL || error != NULL) { DLog(@"can't create sacObject: %@", error); return; } NSDictionary *attributes = @{ (__bridge id)kSecClass: (__bridge id)kSecClassGenericPassword, (_

问题 I save the password to keychain with Touch ID flags: + (void)setPasscode:(NSString *)passcode { CFErrorRef error = NULL; SecAccessControlRef sacObject; sacObject = SecAccessControlCreateWithFlags(kCFAllocatorDefault, kSecAttrAccessibleWhenPasscodeSetThisDeviceOnly, kSecAccessControlUserPresence, &error); if(sacObject == NULL || error != NULL) { DLog(@"can't create sacObject: %@", error); return; } NSDictionary *attributes = @{ (__bridge id)kSecClass: (__bridge id)kSecClassGenericPassword, (_

问题 My App supports opening documents like images, pdfs from other apps. Tocuh Id is implemented as shown below, it is requested when app comes to foreground NotificationCenter.default.addObserver(forName: .UIApplicationWillEnterForeground, object: nil, queue: .main) { (notification) in LAContext().evaluatePolicy( .deviceOwnerAuthenticationWithBiometrics, localizedReason: "Request Touch ID", reply: { [unowned self] (success, error) -> Void in if (success) { } else { } }) Now requesting for Touch

问题 My App supports opening documents like images, pdfs from other apps. Tocuh Id is implemented as shown below, it is requested when app comes to foreground NotificationCenter.default.addObserver(forName: .UIApplicationWillEnterForeground, object: nil, queue: .main) { (notification) in LAContext().evaluatePolicy( .deviceOwnerAuthenticationWithBiometrics, localizedReason: "Request Touch ID", reply: { [unowned self] (success, error) -> Void in if (success) { } else { } }) Now requesting for Touch

问题 My App supports opening documents like images, pdfs from other apps. Tocuh Id is implemented as shown below, it is requested when app comes to foreground NotificationCenter.default.addObserver(forName: .UIApplicationWillEnterForeground, object: nil, queue: .main) { (notification) in LAContext().evaluatePolicy( .deviceOwnerAuthenticationWithBiometrics, localizedReason: "Request Touch ID", reply: { [unowned self] (success, error) -> Void in if (success) { } else { } }) Now requesting for Touch

问题 Im looking into creating an iPad kiosk app to be used by multiple staff in store. I understand that IOS8 exposes Touch ID to apps - my question is, is it possible to use Touch ID to authenticate AND identify multiple users logging into an app? Not that it should matter too much but the app will be Hybrid/Cordova. 回答1: No you can not identify user, you can only authenticate a user. 来源： https://stackoverflow.com/questions/29695669/multi-user-app-login-with-touch-id-on-ipad

问题 I'm integrating TouchID into my app, How can I use 'Enter passcode' option present system build-in passcode screen to authenticate my app.? Any one please explain how to handle case 'LAErrorUserFallback' in objective C. 回答1: You cannot do that. What you can do is use that option to show your own password screen. In your reply block you check the NSError object and switch off the fallback code. ....replyBlock:^(BOOL success, NSError *error) { if (error) { switch (error.code) case

问题 Have a problem with usage of LocalAuthentication and support iOS 7.0 when I'm trying to import LocalAuthentication I'm getting crash if target iOS version is less than 8.0. I tried to mark LocalAuthentication.framework as optional in the build phases and check class availability by calling: var isTouchIDSupported: Bool { if let contextClass: AnyClass = NSClassFromString("LAContext") { return LAContext().canEvaluatePolicy(.DeviceOwnerAuthenticationWithBiometrics, error: nil) } return false }

问题 I want to handle UserFallback to show a pass code screen. I tried this tutorial, but when my UserFallback is called it will ask for Touch-ID again. If I use a wrong finger or Touch-ID did fail, then it's showing Apple's default Passcode screen. Please help me. 来源： https://stackoverflow.com/questions/31891577/how-to-display-iphone-pass-code-screen-when-user-touch-id-authentication-userfa

问题 I am using Touch ID in my app. If Touch ID fingerprint scanning fails three times in a row, I get a Application retry limit exceeded. error. If Touch ID fingerprint scanning fails another two times, I get a Biometry is locked out. error. After being locked out from biometry, you need to enter your passcode. Strangely, if your passcode is entered correctly then this does not lead to a success in the evaluatePolicy callback. Instead, you are then prompted to retry your biometry. How can I get a